The display uses four Max 7219 LED matrix displays, so the total resolution is 32 by 8. [Noapparentfunction] came up with an inspired idea: using a glasses case to hold the LED matrices and ...

If you want to get started, I'll be linking my GitHub repository at the bottom of this article, with code for both the ESP32 and what I used on the Raspberry Pi 1 Model B+.

The algorithm in this microcontroller design drives an LED matrix and provides digital-voltage-readout and bar-like dot displays, showing dots for a graphical output if the input value is changing ...

LEDs continue to dramatically transform signage and lighting. However, often LED displays today are 8×8 and cannot communicate many international alpha-numeric characters. MAXREFDES99# integrates four ...